Rotary engine.



, x Y 0 I D c. J. HUBBARD.

ROTARY ENGINE.

APPLIOA'HOI TILED HA3. 7, 1910.

988,938. I r V Patented Apr- 4, 1911.

2 BHEBTHKEET 1.

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G. J. HUBBARD.

ROTARY ENGINE urmcnlox nun run. 1, mo.

6536A? $88M. 3 5 34% find-d1 1&2. mm 4 rub. T M Mm a m w w L d a P CHARLES J. HUBBARD, OF KANSAS CITY, MISSOURI.

ROTARY ENGINE.

T all whom it may concern.

Be it known that- I. CHARLES J. Hunnxnn, of Kansas City, in the county of Jackson v and State of l\lissouri, have invented certain new and useful Improvements in Rotary Engines, of which the following is a specification, reference being bad to the accompanying drawings, forming part thereof.

This invention has reference to improvenientsin rotary engines having series of prime movers adapted to be driven by elastic fluid and comprising two mcmbcrs, 2'. e. a primary and a secondary or annular member rotatable conjointly about ditlerent axes. The object of this invention is to so construeta rotary engine that the actuating mechanism or primal member thereof may be balanced with respect to the driven element, whereby vibration of the engine is reduced. 7 I

Other objects of the invention will appear from the followin; description.

The invention consists in the peculiar features of construction and combination of parts as shall hereinafter be more fully described and pointed out in the claims.

Figure 1, represents an end view of the improved rotary engine. Fig. 2, represents a partial sectional view of the engine taken on line 2-2, Fig. 3. Fig. 3, represents a partial sectional view taken on line 3 3 Fig. .2. Fig. 4, represents a sectional detail view, taken on line 4-4, Fig. 3, showing the manner in which the primary memher is pivotally connected to the annular member.

Similar numerals of reference designate corresponding parts throughout.

In carrying this invention into practice, in

its preferred construction, I provide a trame having the side members 5 and 6, herein shown as vertical, connected by the shat ts 7 and S on which are rotatively mounted the respective rollers 9 and 10.

Journaled in bearings of the frame members 5 and 6 is the shaft 11 having the putley 12, at one end, and the usual collar 13 at the other end. This shaft 11 extends through and supports the fluid delivery and exhaust member 1-t having the inlet chamber 15 and the exhaust or outlet chamber 16 which are connected, by the channels 17 and 18, respectively with the segmental grooves 19 and 20 formed in the periphery 5 of the contracted extension .21 of said member 14, the mater'al between the ends of said Specification of Letters Patent.

Patented Apr. 4, 191 1.

Application filed March 7, 1910. Serial No; 547,747.

grooves 19 and 20 {tn-min the cutotl's 22 ant :33. Elastic fluid, under pressure, is supplied to the chamber 15 through the pipe 15 and the exhausted gases are conveved from the chamber 16 through the pipe 1b. 7

Keyed to the shaft- 11 is the hub 24 which at one end has the chamber 25 into which the contracted extension 21 of the member 1% extends. The primary member or prime mover member 26 is formed in part with the hub 2-1 and is furnished with a series of radially extending e 'linders 2T, 27, open at their outer ends and having at their inner ends ports 28, 28 formed in the hub 24 and communicating with the chamber 25 at points in line with the segmental grooves 19 and 20 of the contracted extension 21 of member l-l. At. equal distances around the periphery of the member 26 are pairs of ears E29, 29 furnished with pivots 30, 30 on which links 31. 31 are pivotally mounted, said links being also pivotally mounted on the studs 3i. 32, mounted on the annular rotary member or riu; 233, which is supported between rollers 9 and i Freely slidable in the cylinders 27, 27 are the pistons Ill, 31 having )ivoted piston rods 33. 35 each of'which at its outer end, is pivotally connected with the ring 323.

It is to be noticed that the ring 33 rotates about axis a: which is ecccntrically disposed with relation to the axis of the shaft 11 and that this offset of the axis a: from that of said shaft 11 equals the distance between the axes of pivots 30 and 32 which would represent the throw of the crank of an ordinary reciprocating engine, while the thrust. of the piston rods on the ring 33 is resisted by the roller 10 and its shaft 8.

As shown in Fig. .l of the drawings, cylinder QT is receiving steam or other elastic. fluid, under pressure, through its port 28 from the groove. 1!) of the motive fluid dcl'ivcry member it and the piston 34, of said cylinder. moving outward, under pressure of the fluid, exerts an outward thrust, by means of the piston rod 35 on the rotary ring 33. at an angle to the radius of said rotary ring. As such outward thrust is resisted by roller 10 which rotates freely, rotation of ring 33 in the direction of the arrow is effected. As the cylinders move from position of cylinder 27" to that of 27" the thrust of the piston rods continues to be exerted at an angle to the radius of ring 33, such angle being measured by the angle t it that would be shown in Fig. 3 by lines drawn through the axes of the two members and meeting in the center of the outer pivoted connection of the connecting rods, The force of the outward driven pistons will be exerted rotatively during the half revolution; that is, while said angle is maintained. In such forward rotation movement of the ring 33, in the direction indicated by the arrow in Fig. 3, the member 26 is drawn in the same direction by the links 31, and the shaft 11, to which the hub 24 of said member 26 is keyed, is driven. As the ports 28, 28 of the respective cylinders move in succession past the wall or cut off 23 the motire fluid supply is cut oil' from said ports and, immediately thereafter, said ports are brought into communication with the outlet fzroove 20 which receives the exhausted gases from said ports in succession as the pistons are forced into their cylinders by reason that the path of movement of the ring 33 at the exhaust side is nearing the axis of the member 26 until the ports 28 are brought, in succession, in line with the wall or cut off 22 of the motive fluid supply chest formed by the contracted portion 21 of members M.

It should be noted that the ring 33, be ing pivotally connected by links with the primary member 26, which revolves on a fixed axis, therevolution of the ring 33 upon another fixed axis, is secured by confining the ring 33 in such manner that it cannot be forced in either direction upon a line that is at a right angle to the common plane of the two axes. The method of such confinement herein shown is by means of the rollers 9 and 10, but I do not thus limit myself.

While I have herein described a prime mover member particularly adapted for operation by steam or other elastic fluid, supplied from a source exterior to the engine, it is obvious that the cylinders may be arranged for the internal combustion of fuel.

It is to be noted that the links 31, 31, are always parallel to each other and to the median line of said member 26 and ring 33, drawn throu h their axes, whereby the action of said lmks is to balance each other.

Having thus described my invention I claim as new and desire to secure by Letters Patent- 1. A rotary engine comprising a primary member including a plurality of fluid pressure operated pistons and piston rods pivotally connected at their inner ends to the pistons, a shaft extending through the pi"- mary member and projectin from each side thereof, bearings for the projecting ends of said shaft, an annular member surrounding the primary memberand having its axis parallel to and offset. with respect to the axis of the primary member and further having the outer ends of the piston rods pivotallyconnected respectively to and overlapping said members and indepemlcnt of the piston rods and disposed for securing the rotation of the annular member synchronously with the primary member on a fixed axis, and friction reducing devices bearing: against opposite sides of the annular member and so disposed as to prevent the rotation of the axis of the annular member about. the axis of the primary member and further confining the ammlar member in the plane of the thrustof the pistons in two directions at right angles to the longitudinal direction of the links.

2. A rotary engine comprising a primary member including: a plurality of fluid pressure operated pistons and piston rods pivotally connected at their inner ends to the pistons, a shaft extending through the primary member and projecting from each side thereof, b Hl'lllfIS for the projecting ends of said shaft, an annular member surrounding the primary member and having its axis parallel to and oil-set with'respect to the axis of the primary member and further haviue the outer ends of the piston rods pivolally-eomweted thereto, bearings carried by the primary and annular members, and with the bearings of one member in close proximity to the bearings of the other member. links pivotally-connected at one end to the bearings of the primary and at their other ends to the bearings of the annular member and independent of the piston rods and disposed for securing the rotation of the secondary synchronously with the primary on a fixed axis, the bearings for said links being extended in two directions so that the bearings and the wear upon them will. be at all times true and central, and friction reducing devices bearing against opposite sides of the annular member and so disposed as to prevent the rotation of th axis of the annular member about the axis of the primary member and further confining the annular member in the plane of the thrust of the pistons in two directions at right angles to the longitudinal direction of the links.

3. A rotary engine comprising a shaft, a hub keyed to said shaft intermediate the ends thereof, a primary member surround ing said huh and including a series of cylinders radially disposed with respect to and secured to the hub, said primary member further including pistons mounted in said cylinders and piston rods ivotall connected to the pistons, means fdr fi'iplying and exhausting: mot ivolliiid. to. and ,fro m the cylinders througlrthe hub, an annular members'iirronnding the primary member and having its axis parallel to and off-set with respect to the. shaft, means for pivotallyconnecting, the piston rods to said annular member, outwardly extended bearings earing transversely with respect to the axis of 10 ried by said primary member and inwardly said annular member and shaft, and revoluextended bearings carried by said annular ble bearings engaging the periphery of said 5 membefir and in close proximity tel tll;.e bea-rannular member.

5 in s 0 tie )rimary memoer, sai earin s permanently extending in parallel plane s, CHARLES HUBBARD' links having their ends pivotally connected \Vitnesses: upon the extended bearings of said members H. J. MILLER; 1 and permanently disposed in planes extend- F. E. FITZGERALD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

